Hohenschwangau was the summer residence of the Bavarian royal family - King Leopold, Prince Otto, Ludwig, etc. It was used from the 1500's through to the end of the Bavarian royal family in the early 1900's (I think).

It's a very well-maintained residence, and apparently not considered as a full castle because it's too small. It's big enough for me!

Here it is before we start heading up to it.